This time we need to redirect the output to a file where user needs sudo privileges. The tutorial explains, how to redirect sudo output to a file in easy way. We will share some examples, which help you to redirect the output into a file where sudo command is required.
In case you are trying to redirect the output into file where root or sudo privileges is require, you will get the output – permission denied. See the below given examples.
sharad@linuxworld:~/Desktop$ echo test > /root/test bash: /root/test: Permission denied sharad@linuxworld:~/Desktop$ sharad@linuxworld:~/Desktop$ sudo echo test > /root/test bash: /root/test: Permission denied sharad@linuxworld:~/Desktop$
Methods to redirect output into file with sudo command
1. By using sudo sh -c
In this example we will use
sudo sh -c .
sh = command interpreter (shell)
-c = Read commands from the command_string operand instead of from the standard input
Note: Notice the double quotes(“”) in command
sudo sh -c "echo 'This is new testing' > /root/test"
2. By using sudo bash
In this example, we are using
echo "echo 'Something new' > /root/test" | sudo bash
3. By using tee command
In this examples, we will use tee command.
echo 'This is a test' |sudo tee /root/test
In case you want to append new line into file, use the argument -a with
echo 'This is a new line test' |sudo tee -a /root/test